CONCAVE LENS • DICCIONARIO INGLES.COM • Definition of Concave lens

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/kɑnkˈeɪv lɛnz/ Listen

Concave lens

noun

A lens such that a parallel beam of light passing through it is caused to diverge or spread out. Synonym: diverging lens.

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Etymology of 'Concave lens'

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"Concave lens" Quotes from Famous Books

... "long sight," or hyperopia), we put a plus or bulging glass before the eye and thus correct its shape. But if the eye is too round and bulging, producing the familiar "short sight," or myopia, we put a minus or concave lens before the eye, and thus bring it back to the normal. By a curious paradox, however, it often happens that the headache due to eye-strain is caused not by the grosser defects, such as interfere ...

— Preventable Diseases • Woods Hutchinson

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Words linked to "Concave lens" : lense, lens, lens system